Giant Spiny Leaf Insect (Heteropteryx dilatata)Insects, InvertebratesIn this sexually dimorphic species, the female is green or yellow and leaf-shaped, while the male is brown and looks like a dead curled leaf. Both have sharp body spines and can painfully clamp nosy predators with their spiny hind legs. Eggs are laid in the ground and take about a year to hatch.